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RO94393B1 - Process for the preparation of lead dioxide - Google Patents

Process for the preparation of lead dioxide

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Publication number
RO94393B1
RO94393B1 RO123825A RO12382586A RO94393B1 RO 94393 B1 RO94393 B1 RO 94393B1 RO 123825 A RO123825 A RO 123825A RO 12382586 A RO12382586 A RO 12382586A RO 94393 B1 RO94393 B1 RO 94393B1
Authority
RO
Romania
Prior art keywords
lead
lead dioxide
preparation
thiocolical
putties
Prior art date
Application number
RO123825A
Other languages
Romanian (ro)
Other versions
RO94393A2 (en
Inventor
Zoltan Nyitrai
Viorel Filip
Stefan Mazur
Viorel Penes
Original Assignee
Unitatea De Cercetare Si Proiectare Pentru Metalurgie Neferoasa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unitatea De Cercetare Si Proiectare Pentru Metalurgie Neferoasa filed Critical Unitatea De Cercetare Si Proiectare Pentru Metalurgie Neferoasa
Priority to RO123825A priority Critical patent/RO94393B1/en
Publication of RO94393A2 publication Critical patent/RO94393A2/en
Publication of RO94393B1 publication Critical patent/RO94393B1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Inventia se refera la un procedeu de obtinere a unui sortiment de dioxid de plumb utilizat la întarirea chiturilor tiocolice. Conform inventiei, miniul de plumb se trateaza cu acid azotic, la fierbere, azotatul de plumb se transforma în sulfat de plumb cu acid sulfuric diluat si sulfatul de plumb, se oxideaza la dioxid de plumb cu hipoclorit de sodiu în prezenta de clorura de sodiu si hidroxid de sodiu. Se obtine un dioxid de plumb cristalizat în forma alpha si cu o suprafata de 15...22 m2/greutate, care are o activitate corespunzatoare la întarirea chiturilor tiocolice.The invention relates to a process for obtaining an assortment of lead dioxide used for the reinforcement of thiocolical putties. According to the invention, lead is treated with nitric acid at boiling, lead nitrate is converted to lead sulphate with dilute sulfuric acid and lead sulphate, oxidized to lead dioxide with sodium hypochlorite in the presence of sodium chloride and Sodium hydroxide. A crystallized lead dioxide in the alpha form and a surface area of 15-22 m2 / weight is obtained, which has a corresponding activity in the strengthening of the thiocolical putties.

RO123825A 1986-06-23 1986-06-23 Process for the preparation of lead dioxide RO94393B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO123825A RO94393B1 (en) 1986-06-23 1986-06-23 Process for the preparation of lead dioxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO123825A RO94393B1 (en) 1986-06-23 1986-06-23 Process for the preparation of lead dioxide

Publications (2)

Publication Number Publication Date
RO94393A2 RO94393A2 (en) 1988-04-30
RO94393B1 true RO94393B1 (en) 1988-05-01

Family

ID=20119544

Family Applications (1)

Application Number Title Priority Date Filing Date
RO123825A RO94393B1 (en) 1986-06-23 1986-06-23 Process for the preparation of lead dioxide

Country Status (1)

Country Link
RO (1) RO94393B1 (en)

Also Published As

Publication number Publication date
RO94393A2 (en) 1988-04-30

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